Both AMD and Intel have fabs located in the USA as well as all over the planet.
No. I am talking about the fabs that “real men own”, the ones that make the processors. AMD has only two fabs both in Dresden, Germany. Intel has a number of fabs in the US, although they presently have one in Ireland. However AMD has just begun outsourcing chip production with Chartered Semiconductor Manufacturing in Singapore.
In other words, if you buy an Intel chip in the US it will be manufactured in the US. If you buy AMD you will buy a chip made in a foreign country.